
table.table thead tr th.sorting{
    background-color: #ffffff;
    background-image: url("../images/sort_both.png");
    background-position: right center ;
    background-repeat: no-repeat;
}

table.table thead tr th.sorting_asc{
    background-image: url("../images/sort_asc.png");
}
table.table thead tr th.sorting_desc{
    background-image: url("../images/sort_desc.png");
}